Functors templates compilation fix
This MR fixes some inconsistencies found with test in MR Rec!1709 (merged) on some TrackLike functors compilation:
- PHI functor crashing due to the lack of phi() accesor in both PrVelo and PrFittedForwardTracks
- NHITS functor crashing for PrVeloTracks due to m_offset to be changed in offset()
Edited by Marco Cattaneo